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基于含硅类增稠剂的新型超临界CO2压裂液的流变特性及岩心伤害评价

许柳 付美龙 黄倩 王杰 赵众从

许柳, 付美龙, 黄倩, 王杰, 赵众从. 基于含硅类增稠剂的新型超临界CO2压裂液的流变特性及岩心伤害评价[J]. 钻井液与完井液, 2020, 37(2): 250-256. doi: 10.3969/j.issn.1001-5620.2020.02.020
引用本文: 许柳, 付美龙, 黄倩, 王杰, 赵众从. 基于含硅类增稠剂的新型超临界CO2压裂液的流变特性及岩心伤害评价[J]. 钻井液与完井液, 2020, 37(2): 250-256. doi: 10.3969/j.issn.1001-5620.2020.02.020
XU Liu, FU Meilong, HUANG Qian, WANG Jie, ZHAO Zhongcong. A New Supercritical CO2 Fracturing Fluid Containing Silicon Thickener: It's Rheological Property and Core Damage Evaluation[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(2): 250-256. doi: 10.3969/j.issn.1001-5620.2020.02.020
Citation: XU Liu, FU Meilong, HUANG Qian, WANG Jie, ZHAO Zhongcong. A New Supercritical CO2 Fracturing Fluid Containing Silicon Thickener: It's Rheological Property and Core Damage Evaluation[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(2): 250-256. doi: 10.3969/j.issn.1001-5620.2020.02.020

基于含硅类增稠剂的新型超临界CO2压裂液的流变特性及岩心伤害评价

doi: 10.3969/j.issn.1001-5620.2020.02.020
基金项目: 

国家自然科学基金资助项目“超临界二氧化碳泡沫压裂液流变行为与摩阻特性研究”(51604036)

详细信息
    作者简介:

    许柳,长江大学石油与天然气工程专业在读研究生,研究方向为超临界CO2压裂液技术研究。电话18732936158;E-mail:920827113@qq.com

    通讯作者:

    付美龙,教授,1967年生,现从事油田化学及提高采收率技术的教研工作。电话13607210109

  • 中图分类号: TE357.12

A New Supercritical CO2 Fracturing Fluid Containing Silicon Thickener: It's Rheological Property and Core Damage Evaluation

  • 摘要: 针对超临界CO2压裂液黏度低、携砂能力差的应用现状合成了含硅类增稠剂,并研究了超临界CO2压裂液的流变特性及岩心伤害情况,旨在为增稠剂的优选以及现场压裂施工提供参考依据。通过溶液聚合法室内合成了聚甲基倍半硅氧烷PMSQ和聚甲基倍半硅氧烷-醋酸乙烯酯PMSQ-VAc二元共聚物增稠剂,采用红外光谱测试验证了增稠剂样品的主要官能团,运用高压长管管流实验法测试了超临界CO2压裂液的增黏效果及其流变特性,最后评价了超临界CO2压裂液在人造裂缝天然长岩心中的滤失性、岩心伤害率。研究结果表明,随着温度、压力的升高,2种增稠剂的增黏效果均先增大后减小;随着增稠剂注入量的增大,2种CO2压裂液的黏度先增大后减小;在超临界CO2流体中,PMSQ-VAc的增黏效果相对较好,可使其黏度最大达到3.892 mPa·s;在渗透率为0.551 mD的岩心中,PMSQ-VAc与超临界CO2流体混合后压裂液的滤失系数为1.435×10-2 m/min1/2,滤失速度为0.010 m/min,岩心的伤害率为16.33%~25.36%,滤失系数和滤失速度较小,伤害程度属弱。

     

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出版历程
  • 收稿日期:  2020-01-06
  • 刊出日期:  2020-04-28

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